20111319227824 has 80 divisors (see below), whose sum is σ = 42551042808960. Its totient is φ = 9132259105280.

The previous prime is 20111319227809. The next prime is 20111319227869. The reversal of 20111319227824 is 42872291311102.

It is a happy number.

It is a super-2 number, since 2×20111319227824² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374937599 + ... + 1374952225.

It is an arithmetic number, because the mean of its divisors is an integer number (531888035112).

Almost surely, 2^{20111319227824} is an apocalyptic number.

It is an amenable number.

20111319227824 is an abundant number, since it is smaller than the sum of its proper divisors (22439723581136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111319227824 is a wasteful number, since it uses less digits than its factorization.

20111319227824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22018 (or 22012 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 20111319227824 in words is "twenty trillion, one hundred eleven billion, three hundred nineteen million, two hundred twenty-seven thousand, eight hundred twenty-four".